Date: Tue, 15 Jul 2008 21:42:03 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: john@basicnets.co.uk Cc: 'Jeremy Chadwick' <koitsu@FreeBSD.org>, freebsd-stable@freebsd.org Subject: Re: Fresh 7.0 Install: Fatal Trap 12 panic when put under load Message-ID: <487CFD8B.2060905@FreeBSD.org> In-Reply-To: <20080715201915.8m5j3k1lw00k4gck@mail.basicnets.co.uk> References: <854CADB9D95147CAB10BC35887A8E5DC@emea.hubersuhner.net> <20080715102135.GA18082@eos.sc1.parodius.com> <B23D0848E1304F719FEBDC3EDC54B914@emea.hubersuhner.net> <487C8486.1040904@FreeBSD.org> <20080715201915.8m5j3k1lw00k4gck@mail.basicnets.co.uk>
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john@basicnets.co.uk wrote:
> (kgdb) backtrace
> #0 doadump () at pcpu.h:194
> #1 0xffffff0004742440 in ?? ()
> #2 0xffffffff80477699 in boot (howto=260)
> at /usr/src/sys/kern/kern_shutdown.c:409
> #3 0xffffffff80477a9d in panic (fmt=0x104 <Address 0x104 out of bounds>)
> at /usr/src/sys/kern/kern_shutdown.c:563
> #4 0xffffffff8072ed44 in trap_fatal (frame=0xffffff00048ee000,
> eva=18446742974275512528) at /usr/src/sys/amd64/amd64/trap.c:724
> #5 0xffffffff8072f115 in trap_pfault (frame=0xffffffffb1d7f4e0,
> usermode=0)
> at /usr/src/sys/amd64/amd64/trap.c:641
> #6 0xffffffff8072fa58 in trap (frame=0xffffffffb1d7f4e0)
> at /usr/src/sys/amd64/amd64/trap.c:410
> #7 0xffffffff807156be in calltrap ()
> at /usr/src/sys/amd64/amd64/exception.S:169
> #8 0x0000006400000000 in ?? ()
> #9 0xffffffff8067d3ee in uma_zalloc_arg (zone=0xffffff00bfed07e0,
> udata=0x0,
> flags=-256) at /usr/src/sys/vm/uma_core.c:1835
OK, that is
if (zone->uz_ctor != NULL) {
if (zone->uz_ctor(item,
zone->uz_keg->uk_size,
uz_ctor is indeed not null, but it's got 3 bits set. Not impossible
that it's bad RAM still. I didn't spot anything that could cause it
otherwise but I don't know this code in detail.
Do all of the panics have the same backtrace?
Kris
> #10 0xffffffff80661ecf in ffs_vget (mp=0xffffff00047f4978, ino=47884512,
> flags=2, vpp=0xffffffffb1d7f728) at uma.h:277
> #11 0xffffffff8066d010 in ufs_lookup (ap=0xffffffffb1d7f780)
> at /usr/src/sys/ufs/ufs/ufs_lookup.c:573
> #12 0xffffffff804dfa89 in vfs_cache_lookup (ap=Variable "ap" is not
> available.
> ) at vnode_if.h:83
> #13 0xffffffff8077235f in VOP_LOOKUP_APV (vop=0xffffffff809e7de0,
> a=0xffffffffb1d7f840) at vnode_if.c:99
> ---Type <return> to continue, or q <return> to quit---
> #14 0xffffffff804e6394 in lookup (ndp=0xffffffffb1d7f950) at vnode_if.h:57
> #15 0xffffffff804e7228 in namei (ndp=0xffffffffb1d7f950)
> at /usr/src/sys/kern/vfs_lookup.c:219
> #16 0xffffffff804f4717 in kern_stat (td=0xffffff00048ee000,
> path=0x8006f7040 <Address 0x8006f7040 out of bounds>,
> pathseg=Variable "path
> seg" is not available.
> )
> at /usr/src/sys/kern/vfs_syscalls.c:2109
> #17 0xffffffff804f4987 in stat (td=Variable "td" is not available.
> ) at /usr/src/sys/kern/vfs_syscalls.c:2093
> #18 0xffffffff8072f397 in syscall (frame=0xffffffffb1d7fc70)
> at /usr/src/sys/amd64/amd64/trap.c:852
> #19 0xffffffff807158cb in Xfast_syscall ()
> at /usr/src/sys/amd64/amd64/exception.S:290
> #20 0x000000000043127c in ?? ()
> Previous frame inner to this frame (corrupt stack?)
>
> I really don't understand this -any advice you can give would really
> be appreciated.
>
> John
>
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